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A ball is thrown straight up in the air....

A ball is thrown straight up in the air. For which situation are both the instantaneous velocity and the acceleration zero ?

A

one the way up

B

at the top of its flight path

C

halfway up and halfway down

D

none of the above

Text Solution

Verified by Experts

The correct Answer is:
D
Once the ball has left the thrower's hand, it is a freely falling body with a constant, nonzero, acceleration of `a = -g`. Since the acceleration of the ball is not zero at any point on its trajectory, choices (a) through ( c) are all false and the correct response is (d).
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